Home / 807,499,009.40-1,211,248,514.10-440,166,990.20

Finding the Fourth Proportional to 807,499,009.40, 1,211,248,514.10 and 440,166,990.20

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Solution

The fourth proportional to 807,499,009.40, 1,211,248,514.10 and 440,166,990.20 is: 660,250,485.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,499,009.40 : 1,211,248,514.10 = 440,166,990.20 : x
  2. Step 2: Convert to fraction form
    807,499,009.40/1,211,248,514.10 = 440,166,990.20/x
  3. Step 3: Cross multiply
    807,499,009.40x = 1,211,248,514.10 × 440,166,990.20
  4. Step 4: Simplify right side
    807,499,009.40x = 533,151,612,835,619,200
  5. Step 5: Solve for x
    x = 533,151,612,835,619,200/807,499,009.40
  6. Step 6: Final answer
    x = 660,250,485.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.